"Just because" isn't a good reason to interrupt someone you are connected to with your sales message.
Yes, we may be connected, but...
Just because you have my email address, it doesn’t mean you should email me your sales message.
Just because you have my phone number, it doesn’t mean you should call me with your sales pitch.
Just because we’re connected on LinkedIn, it doesn’t mean you can add me to your distribution list.
Just because I follow you on Twitter, it doesn’t mean you can sell me something via Direct Message.
Winning trust takes time
When you have someone's attention, you have a valuable asset. Don’t waste it by being selfish.